Machine for rolling plates for automobile-radiators.



w. SCHOELLKOPF.

MACHINE FOR ROLLING PLATES FOR AUTOMOBILE RADIATORS.

APPLICATION FILED APR.15. 1914. RENEWED AUG. 27, 1915.

1,163,865. Patented Dec. 14, 1915.

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Eli 9'5 MHEEEEE W. SCHOELLKOP MACHINE FOR ROLLING PLATES FOR AU APPLICATION FILED APR.15.1914. REN 1,163,653.

TOMOBILE RADIATORS.

EWED AUG. 27, 1915- Patented Dec. 14, 1915.

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W. SCHOELLKOPF. MACHINE FOR ROLLING PLATES FOR AUTOMOBILE RADIATORS.

RENEWED APPLICATlON FILED APR-15.1914- AUG. 27. I915- 1 163,865. Patented Dec. 14, 1915.

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TIIFIIITIKD %TATE% PATENT @FFIQE.

WILLIAM SCHOELLKOPF, OF CLEVELAND, OHIO, ASSIGNOR TO THE CLEVELAND AUTO RADIATOR COMPANY, OF CLEVELAND, OHIO, A CORPORATION.

MACHINE FOR ROLLING PLATES FOR AUTOMOBILE-RADIATORS.

Specification of Letters Patent.

Patented Dec. 14, 1915.

Application filed April 15, 1914, Serial No, 831,816. Renewed August 27, 1915. Serial No. 47.687.

To all whom it may concern:

Be it known that I, WILLIAM SCHOELL- KOPF, citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Machines for Rolling Plates for Automobile-Radiators, of which the following is a specification.

This invention appertains to a machine for rolling plates for automobile radiators and particularly of the kind or construction of plate disclosed in my co-pending application Ser. No. 798,848, filed November 3, 1913.

In the accompanying drawings, Figure l is a plan view of the machine on line aa, Fig. 2, and Fig. '2 is a side elevation of the machine. Fig. 3 is a cross section on line Z)b, Fig. 2. Fig. 4 is an enlarged side elevation of the two rolls or rolling members between which the sheets are pressed or formed into the desired shape, and Fig. 5 is an edge or face elevation of said rolls mounted as in Fig. 4. Fig. (5 is a section of the two rolls or rolling members and of a sheet passing between the same and fashioned into the shape of the finished product. Fig. 7 is an edge elevation partially insection of several plates as formed up by the said rolls and assembled into what may be termed a radiator unit or section. Figs. 8 and 9 are sectional elevations of the rolls related substantially as in Fig. 5 but broken away here and there to disclose features of construction not otherwise plainly seen. Figs. 10 and 11 are perspective views of a section of a plate as rolled into shape by the said forming members and showing opposite s des thereof.

In my above mentioned application I show an automobile radiator formed of plates that have been wrought into the shape shown by means of rollingmembers featured as illustrated herein and constituting a new article of manufacture in the shape of the plates, particularly. In the present application I show and claim the machine by which a plain sheet of thin metal is converted into radiator plates, and the said machine comprises two rolls or rolling members, A and I), mounted one above the other in a suitable frame F on shafts Sand S respectively, the larger so-called matrix member B being below and the smaller or die member A above in the present arrangement. The

bearings b of the lower member may be fixed or stationary while the bearings a of the upper member are adjustable vertically by means of the screws 0, or their equivalent. Power is applied to the shaft of the upper member or roll from a motor by belt 3 or equivalent means. Obviously, the mountings of the said members as thus described are subordinate features of the present invention, the essential portions of which consist more especially in the construction of the said rolls or members as plate forming media adapted to produce the product say as shown in Figs. 10 and 11.

When the plates are assembled as shown in Fig. 7 they form what is known as the cellular type of radiator, in which the air passages or ducts (Z pass straight through from side to side and are surrounded by spaces 6 of film like proportions containing the liquid medium to be cooled, usually water. In these relatively shallow spaces or films, so-called, the fluid circulates from top to bottom of the radiator, thus traversing a series of said air passages at right angles and cn both sides thereof, and getting the maximum of cooling exposure in the least possible area. However, a peculiarity of construction enters into this formation of the plates which is essential to their operation and differentiates the radiator from all others with 'whichI am familiar. Thus, all the said plates, four in number in each built-up unit or section, are exactly alike in every particular and interchangeable as to position, the only exception being that they must be reversed or inverted in respect to each other according to the position they occupy in the structure. All the said plates are made from thin sheets of brass or other suitable metal adapted to be wound in long strips on a roll r, as in Fig. 2, and to be drawn off and pressed into shape between the two members A and B, as partially disclosed in Figs. 1 and 2. In a sense both sides of each plate have ribs or corrugations pressed therein and alter nated by corresponding recesses, which, of course, come within the said ribs. The ribs or corrugations 2 are peculiar and original in this, particularly, that they are of less face width than the ribs 4 on the opposite side, and the said ribs 2 are further narrowed or reduced both in depth and width between their ends at 3 as clearly seen in Fig. 11 and as compared with the full sized extremities or ends 5. That is to say, the

said extremities 5 are substantially equal in- At said ends 5. the ribs 2 are designed tonest snugly in the ends of the ribs 4: to make a fluid tight joint by soldering.

Another distinguishing peculiarity of these plates is found in the even formation of one side surface as compared with the uneven formation of the other side. Thus, the surface 8 of all the ribs t is fiat or flush one rib with the other and the sides are parallel the full length, whereas the ribs 2 are uneven or have the depressions in their edge and at the sides as seen at 3. Hence when the plates are brought together or nested in working relations the flat faces 8 of the ribs 4 come on the outside and the smaller ribs 2 on the inside, as clearly seen in Fig. 7. For this reason, also, the plates are very easily assembled, and when assembled all'ord a rigid and well braced structure the full depth front to rear of the comb and not merely at the ends, as in some radiators. N ow, having noted these distinguishing features in the plates as developed by the machine herein shown the construction of the said rolls or shaping members A and B which produce said plates will be more clearly understood. For example, it will be noticed that the said rolls have ribs 6 and 7, respectively, which correspond to or with the ribs 2 and a on the plates, and that all the ribs or corrugations 6 in the roll A are of the rib 2 pattern, while all the ribs or corrugations 7 of the roll B are of the rib 4: pattern. Furtherinore, and in order to approach the actual construction and operation more nearly, the ribs (3 and 7 may be regarded as dies and the spaces betweeen said ribs respectively as matrices. In working relation the said dies 6 and 7 are seen in Fig. 4 as being in mesh, like gear teeth, but this is not the real relation, because the dies 6 of the roll A enter recesses or spaces between the dies 7 and which constitute the matrix for said dies while the recesses or spaces between said dies 6 constitute the matrices for the dies 7, and the said matrices and the corresponding dies together are constructed to give the shape shown to the said plates. The roll A is under power and the roll B is actuated thereby and thus the sheet m of the roll 1 is drawn out and pressed into shape by the direct action of roll A. Thus the wider flat and even surfaces 8 of ribs 4 in the plates are formed by the ribs 7 in roll B working in the straight flat bottoms of the recesses or matrices 9 between the ribs 6, while the said ribs 6 cooperate with the matrices 10 between the ribs 7 to produce the narrower ribs- 2 of the plates. Now, referring more exclusively to the said forming ribs or dies 6 and 7 it is to be noticed that the ribs or dies 6. are smaller in cross section than the ribs or dies 7 by the thickness of the metal sheet or plate P, and the relative depths to whichsaid dies penetrate in the respective matrices 9 and 10 depends further on the surface formation desired in the-respective ribs 2 and A in the plates produced. Rotation of the so-called matrix member 13 and the simultaneous drawing of the sheet from roll 1 occurs through roll A. and all portions of the respective dies 6 and 7 and the matricesbetween are matched to fashion the sheet into the desired shape as'it is drawn off from the roll and fed out on the other side into an enclless length until the said product is severed into the required length for the use described. Dotted lines in Fig. 6 particularly show the difference in the depth of the said matrices and ribs at which the work is accomplished at their ends, and these lines of course agree with the formations in the plates shown especially in Figs. 10 and 11.

In its broadest sense the machine as thus shown may be regarded as a sheet metal corrugating embodiment, but it is more than this specifically because it is adapted to form alternate corrugations or ribs of materially diflerent shapes and which are adapted to be disposed oppositely in inverse order as clearly shown. That is the corrugations or ribs 2 are oppositely disposed at the sides of. the air passages while the corrugaticns l also are oppositely disposed and adapted to rest one against the other midway between passages. Furthermore, and important in this case, is the difference between the pitch diameters of the rolls or members A and B and the size of the corrugations so that not exceeding a single rib, die or corrugation of either roll will ever come into bearing relation with the opposite roll at the same time. This is illustrated in both Figs. e'and 6, where the pressure for the time being is on the middle rib 4 and only thereon. It will next be on the next succeeding rib 2 of roll A but when this occurs the pressure will leave rib L in so far as detentionvof the stock is concerned and be transferred to rib 2 next succeeding.

Heretofore in all efforts to produce plates for automobile radiators and otherpurposes by rolling and intermeshing corrugations it has beenthe invariable practice, so far as I know and believe,to make the rolls of the same size and it followed as a natural consequence that the sheet was caught at two or more points apart from each other and of course torn or ruptured between those points as it would be if say two of the ribs 4: were to engage the plate over one or more of the ribs 2. Hence, the forming up of radiator plates from the usually thin metal employed for this purpose had to be abandoned and other methods of manufacture adopted. My discovery of the small Wheel with ribs so disposed that the metal at no time can be caught and drawn between two separate contact or forming points has proved the solution of the problem. It will also be observed that the two sides and edge of the tapered ribs A which enter into the shaping of the air passages d are caused to contact with the opposite corresponding portions of the roller A at only a single point at a time so as to avoid tearing or rupturing the plate, as described. 'lhus, as seen in Big. 6, the edge or face of central rib A is in even contact with the depression in roll A through the plate. This is the single contact referred to and the sides of said rib are out of contact except of course at the immediate edge Where the angle with the face of the rib occurs. It also follows that when either side of said rib contacts full Width with either rib 2 of the opposite roll the face and the opposite side of the particular rib 4 involved is out of contact. The action therefore is progressive in every tooth of both rolls from side to edge and to the next succeeding side and so on throughout the operation. Again, in order that the plates shall be held in proper related positions when assembled 1 form small projections n and cavities 0 on the ribs 7 and corresponding cavities 0 and projections 17. at the bottom of the depressions in roll A, but only alternate ribs and depressions are thus formed. This ccnstruction produces small nipples and cavities respectively to the plates which match or register and thus bring and hold two plates in fixed alinement when the flat faces 8 of each are placed in abutting relations.

What I claim is:

1. A machine as described, having a pair of rolls of difierent sizes and ribbed lengthwise, the ribs of the smaller roll being of less size in cross section than those of the opposite roll and having edges of greater depth and Width at their ends than between said ends, and the opposite roll having correspondingly shaped recesses between the corrugations thereon.

2. A machine as described having two rolls provided with intermeshing ribs lengthwise, the said ribs on one roll having raised end portions as compared with the middle thereof, and the ribs of the opposite roll straight and uniform from end to end, and both said rolls having intervening spaces between ribs shaped at the bottom and sides to match the shape of the ribs of the opposite roll.

3. A machine as described comprising two intermeshing rollers, one of Which is approximately half as large as the other and provided with ribs lengthwise having ends of like size and the portions between ends reduced in elevation and along both sides thereof as compared with said ends, and the larger roller having ribs of uniform cross section from end to end and depressions between the same shaped to receive the ribs on the smaller roller.

4-. A machine adapted to corrugate plain metallic sheets comprising a pair of rolling members having ribs and depressions alternately extending from side to side and all the ribs in one member of less cross section in their middle portion than the ribs in the other member and the ribs of said other member straight from end to end and said depressions in both rolls shaped at their middle and ends 18 match the shape of the ribs on the opposite roll.

In testimony whereof I aflix my signature in presence of two witnesses.

WVILLIAM SCHOELLKOPF.

lVitnesses:

Jones S. DICKLE, A. I. NEWMAN.

Copies of this patent may be obtained for fivecents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

